Wearable technologies are being used for crime-fighting now, thanks to two innovative companies, Cuff and First Sign.

Cuff is a jewelry company that allows you to contact a chosen group of people quickly in case of an emergency. All the wearer has to do is push the cuff when they are in danger and if their group has a cuff of their own it will vibrate. If not, then the alert will go directly to their phones, with the alert including your location and health information. Select your group of friends and family right inside your Cuff app.